12th Grade > Biology
THE LIVING WORLD MCQs
The Living World, Living Organisms And Their Surroundings, Diversity In Living Organisms
Total Questions : 114
| Page 12 of 12 pages
Answer: Option B. -> False
:
B
The environment where an organism lives is called its habitat. The organisms depend on their habitats for food, water, shelter and other needs. All organisms do not live in the same habitat.
According to their habitat, animals are divided mainly into the following groups:
∙ Terrestrial animals are those which live entirely on land. E.g., horse, lion, etc.
∙ Aquatic animals are creatures that live in water. E.g., fishes, whales, etc.
∙ Amphibious animals, like frog, salamander and toad, live on both land and water.
:
B
The environment where an organism lives is called its habitat. The organisms depend on their habitats for food, water, shelter and other needs. All organisms do not live in the same habitat.
According to their habitat, animals are divided mainly into the following groups:
∙ Terrestrial animals are those which live entirely on land. E.g., horse, lion, etc.
∙ Aquatic animals are creatures that live in water. E.g., fishes, whales, etc.
∙ Amphibious animals, like frog, salamander and toad, live on both land and water.
Answer: Option A. -> gills
:
A
Land animals, such as lions, have lungs to take in oxygen from the air. Fishes, on the other hand, cannot breathe in oxygen directly from the atmosphere.So theyhave specialised organs called gills to help them breathein the oxygen dissolvedin water.
:
A
Land animals, such as lions, have lungs to take in oxygen from the air. Fishes, on the other hand, cannot breathe in oxygen directly from the atmosphere.So theyhave specialised organs called gills to help them breathein the oxygen dissolvedin water.
Answer: Option B. -> stimulus
:
B
Any changein the surroundings that causesthe organisms to respond to them isknown as a 'stimulus'. In this case, the insect is sitting on the open mouth of the pitcher plant, so touch is anstimulus here. It evokesthe flap of the pitcher plant toshut, which is the response of the plant.
:
B
Any changein the surroundings that causesthe organisms to respond to them isknown as a 'stimulus'. In this case, the insect is sitting on the open mouth of the pitcher plant, so touch is anstimulus here. It evokesthe flap of the pitcher plant toshut, which is the response of the plant.
Answer: Option C. -> Rock
:
C
∙ The living things in a habitat are its biotic components whereas non living things in a habitat are its abiotic components.
∙ Rock, air, water and sunlight are the abiotic components in a habitat. All the plants and animals are the biotic components in a terrestrial habitats and fish is the biotic component in aquatic habitat.
:
C
∙ The living things in a habitat are its biotic components whereas non living things in a habitat are its abiotic components.
∙ Rock, air, water and sunlight are the abiotic components in a habitat. All the plants and animals are the biotic components in a terrestrial habitats and fish is the biotic component in aquatic habitat.
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